论文标题
在$ t \ bar {t}+$ dm搜索的排除限制
On the exclusion limits in $t\bar{t}+$DM searches at the LHC
论文作者
论文摘要
在这些程序中，我们讨论了高阶校正和外壳效应的重要性，以计算$ t \ bar {t}+$ dm搜索在大型强子对撞机上的信号强度排除限制。我们使用最先进的NLO QCD预测提供了SPIN-0 S-channel介体模型的限制，该预测对相关的$ t \ bar {t} $和$ t \ bar {t} z $背景过程具有完整的外壳效果。然后将这些与不太复杂的预测进行比较，使用窄宽近似值或LO计算以评估各自的效果。
In these proceedings we discuss the importance of higher-order corrections and off-shell effects for the calculation of signal strength exclusion limits in $t\bar{t}+$DM searches at the Large Hadron Collider. We present limits for the spin-0 s-channel mediator model using state-of-the-art NLO QCD predictions with full off-shell effects for the relevant $t\bar{t}$ and $t\bar{t}Z$ background processes. These are then compared to less sophisticated predictions using either the narrow-width approximation or LO calculations in order to asses the respective effects.
